

OBD - With the OBD mode, you can easily access all the ECU data through the diagnostic socket.
BENCH - A simple interface to the connector and you have complete access to the data of your ECU.
BOOT - This mode allows you to access all system data areas. Read, Write and Clone.

Multi-language Support
Supported Language: English, Italian, French, German, Spanish, Portuguese, Chinese, Polish, Russian.
Renewed achitecture
Every aspect of KESS3 is carefully designed to achieve performance, operational flexibility, and ease of use. Its renewed architecture exploits the full potential of each component.
New microprocessor, latest generation I/O interfaces, new built-in sensors and high-performance EEPROM and FLASH memories are the main features of KESS3.
THE CPU
The most powerful microprocessor on the market. 7 times more powerful than the previous generation. Pure power that can execute your commands reliably, faster and more efficiently.
LINES OF COMMUNICATION
KESS3 automatically and instantly recognizes the right communication line, to work faster, using only an OBD cable. Ethernet, FlexRay, CAN Bus, K-Line, L-line, J1850, J1708.
All the essential lines to start any operation inside the vehicle in total safety.
PROJECTED TOWARDS THE FUTURE
GPS, Accelerometer, Bluetooth, and Wi-Fi. All embedded in one platform.
The combination of these features and the constant technological developments that distinguish us will allow us to develop many new functions in the future.
PERFORMANCE
The renewed USB Full speed chip allows an up to 10x increase in the performance of importing and exporting files to and from the KESS3.
But not only that, Alientech added a new web infrastructure to the new KESS3.
The result being, an Alientech cloud with improved speed and performance.
Resilience and Durability for your workshop.
Innovative Design
lientech has provided added value by researching and incorporating the best usable materials. Designed to offer you versatile and rugged mobility, thanks to the durability of the materials. KESS3 is built around a fiberglass shell which gives it lightness and flexibility. An ergonomic shell, resistant to shocks and vibrations.
An exceptionally strong tool that can be taken anywhere.
Alientech Suite – NEW Software.
Such an advanced new hardware inspired Alientech to design software that would take full advantage of its potential. A completely redesigned and new operating suite, in design and architecture.
NEW DESIGN
New look, clean design, everything you need at your fingertips. Updated regularly to be functional, usable and easy.
USER EXPERIENCE
A completely renewed UX. An intuitive dashboard with improved access to the vehicle list with the ability to create a list of favorite vehicles and a view of the history of vehicles already interfaced.
COMPATIBILITY LIST
List of protocols and vehicles updated daily and always available online www.alientech-tools.com/vehicles. Technical instruction available in multi-language to support users during the most complex operations.
PERFORMANCE
The new interactive "search" function will allow you to access the vehicle list or search for the microprocessor of your ECU in a few seconds.
Downloading and updating the list are now instant.
SUPPORT
Direct access to the Alientech help desk and all development news.
Personalize your custom KESS3.
Alientech gives a flexible solution that best suits your business requirements. You can choose the right configuration for you, based on your job today or what you may require tomorrow.
VERSIONS: Master or Slave according to your needs.
TYPE OF VEHICLES: Communication protocols divided into packages by type of vehicle.
Choose from the Car, Motorcycle, Truck / Tractor and Marine world packages.
COMMUNICATION METHODS: OBD, BOOT and BENCH connection from KESS3 to the control unit.


VERSIONS: Master or Slave
Master or Slave? Buy what you need
The Master version can manage the SLAVE version.
The SLAVE version cannot modify files, it can only read and write files. Only the Master version can modify files.
A single flexible device that can be configured as required, when the tool is initialized, you can choose the mode of operation.
MASTER - The configuration that allows you to edit software calibrations in a completely autonomous way. The read files can be interpreted by your choice of remapping software.
SLAVE: If you are not confident yet or sufficiently autonomous in editing software calibrations, thanks to this mode you can work with a network of trainers who will support you file requirements.
DEALER-NETWORK: If you intend to create your own slave network of tuners, you will have a reliable and easy to use tool.
If you buy slave version and want upgrade to Master version, you can just pay for the price difference and get upgraded.
License you can buy:( You need buy any of those license to works together with your KESS V3 hardware. If you need buy more than one license, you can contact our customer service to get discounts)
When purchasing the device, at least one software protocol is required. The basic version cannot function without licenses and is not sold separately! Upon purchasing a protocol you will recieve software updates and free technical support and for a year. In the future, the subscription is renewed for an annual fee.
XNR-SS451-MA001 KESS3 Master - Car - LCV OBD Protocols activation
XNR-SS451-MA002 KESS3 Master - Bike - ATV & UTV OBD Protocols activation
XNR-SS451-MA003 KESS3 Master Agriculture - Truck & Buses OBD Protocols activation
XNR-SS451-MA004 KESS3 Master - Marine & PWC OBD Protocols activation
XNR-SS451-MA005 KESS3 Master - Car - LCV Bench-Boot Protocols activation
XNR-SS451-MA006 KESS3 Master - Bike - ATV & UTV Bench-Boot Protocols activation
XNR-SS451-MA007 KESS3 Master - Agriculture - Truck & Buses Bench-Boot Protocols activation
XNR-SS451-MA008 KESS3 Master - Marine & PWC Bench-Boot Protocols activation
XNR-SS451-SA001 KESS3 Slave - Car - LCV OBD Protocols activation
XNR-SS451-SA002 KESS3 Slave - Bike - ATV & UTV OBD Protocols activation
XNR-SS451-SA003 KESS3 Slave - Agriculture - Truck & Buses OBD Protocols activation
XNR-SS451-SA004 KESS3 Slave - Marine & PWC OBD Protocols activation
XNR-SS451-SA005 KESS3 Slave - Car-LCV BenchBoot Protocols activation
XNR-SS451-SA006 KESS3 Slave - Bike - ATV & UTV Bench-Boot Protocols activation
XNR-SS451-SA007 KESS3 Slave - Agriculture - Truck & Buses Bench-Boot Protocols activation
XNR-SS451-SA008 KESS3 Slave - Marine & PWC Bench-Boot Protocols activation
XNR-SS451-M5001 KESS3 Master- 12 Months Subscrlptlon
XNR-SS451-M5002 KESS3 Master - 6 Months Subscriptlon
XNR-SS451-SS000 KESS3 Slave - 12 Months Subscriptlon
XNR-SS451-SS0006 KESS3 slave - 6 Months Subscrlptlon
Alientech KESS3 UPDATES:
Free upgrade of DTC function

Buy Original Alientech KESS3 + Master Version Car OBD LCV Protocol Authorization + Master Version Car Bench-Boot LCV Protocol Authorization Get Free GODIAG GT100 Pro(Limited Offer From 2025-2-21 to 2025-3-10)
GODIAG GT100+ OBDII Breakout Box is a latest testing platform for OBDII protocol communication detection and ECU maintenance / diagnosis / programming / coding. Different from GT100 OBDII Breakout Box , this new version OBDII Breakout Box support CAN BUS protocol and add Current Display.
1. Display Voltage and Current Function: GT100+ OBD2 Breakout Box connect with ECU module via banana connector or DB25 connector, can directly shows your current data. You can easily judge whether your cable has connect correctly or whether the ECU module is in good condition.
2. Newly Added CAN BUS And K-LINE Protocol: GT100+ OBD2 Breakout Box port 1,9,3,11,12,13,8 those are not standard obd2 protocol port, it will shows CAN BUS and K-LINE protocol while GT100 OBDII Breakout Box only shows K-LINE, PWM VPW+ and KWP2000+ protocol.
3. Help Activated the dashboard or IMMO module for VW,Porsche,MIT and Toyota: For VW, Porsche or MIT or Toyota all key lost, you can use GT100+ OBDII Breakout Box to activate dashboard or immo module before you use other tools like Autel IM608 to do all key lost.
4. ECU Connection or Multiple Vehicle ECU Module Connecting: Conecting the single or multiple ECU control modules at the same time, GT100+ OBDII Breakout Box is good helper for programming and diagnosing.
5. Banana Plug Extension Connection: Extend the car's OBDII 16pin interface to tell you whether the OBDII interface connection is good or not, which is convenient for the test of OBDII interface voltage waveform.
6. Convert Obd1 Diagnostic Interface To The Standard Obd2: GT100+ OBDII Breakout Box Use the connector to convert the OBD1 interface into obd2 interface according to the diagnostic interface communication protocol.
7. The Extension Cables: The space of the diagnostic interface location is too narrow to connect to the diagnostic tool, or the user find that the diagnostic cable is not long enough during maintenance. It can be extended by 4.5ft.
8. Power The Car When Replac Battery: The auxiliary power supply aims at supplying power to the vehicle through GT100+ OBDII Breakout Box before replacing the battery to sustain the power supply to the vehicle.

Package List:
1pc x KESS3 Hardware
4pcs x Adapters
1pc x Power Adapter
2pcs x Jumpers
3pcs x Cables
1pc x Main Cable
1pc x DC Male Plug to Dual Alligator Clip DC Power Cable
1pc x Master Version Car OBD-Bench-Boot LCV Protocol
1pc x Free GODIAG GT100 Pro
KESS3 FAQs:
Q: Can I update slave version to Master version?
A: Yes, just for pay the price difference to get it updated.
Q: Old Kess v2/ktag accessroies compatible with KESS3?
A: Yes.
Q: Can I downgrade master version to salve version?
A: Yes, The price difference of the equipment will not be compensated
Q: What is the difference betwwen Master and Slave?
A: As a Master user, you can read the files in clear. This allows you to operate independently in order to remap and reprogram the ECU with modified files. As a slave user, only your master will be able to decrypt your files. (Recommended choice for taking the first steps in chiptuning, supported by your Master)
Q: Can i activate master license and slave license to the same device?
A: No, you cannot.
Q: How to check device serial number?
A: SN is on the back of the kess3 unit, or check in AlienSuite software.
Q: Can i use the tool if subscription expires?
A: Yes, When the subscription runs out, the customer can keep working with his KESS3 and he will have access to all the protocols he had until its expiration date, except VR ones.
Moreover, he won't have access to:
- technical assistance
- VR function
- Cloning
- All the online services such as ORI file download.
Q: Can I unbind license if i purchase kess3 from othe dealer, then purchase license from you?
A: No possible to unbind device no matter where you buy the machine.
Q: If my subscription expires on 1 dec, 23, I don't renew it until 1 March 24, when does the new subscription expire?
A: From day it ran out.
Q: If when my master kess3 subscription is due in Dec, 24th, 2023 and l decide not to carry on paying. Can i have all the protocol updates if I pay for the subscription 6 month later?
A: Yes, you will have all protocols from expiry to renewal period.
Q: What types of vehicles are supported?
A Alientech supports hundreds of thousands of vehicles. Not only engine control units, but also transmission control units equipped on cars, motorcycles, tractors, trucks and boats. To know all the vehicles that Alientech supports, you can easily consult our vehicle list.

